<template>
  <div>
    <div class="n-layout-page-header">
      <n-card :bordered="false" title="菜单权限管理">
        页面数据为 Mock 示例数据，非真实数据。
      </n-card>
    </div>

    <n-grid class="mt-4" cols="1 s:1 m:1 l:3 xl:3 2xl:3" responsive="screen" :x-gap="12">
      <n-gi span="1">
        <n-card :segmented="{ content: 'hard' }" :bordered="false" size="small">
          <template #header>
            <n-space>
              <n-dropdown trigger="hover" @select="selectAddMenu" :options="addMenuOptions">
                <n-button type="info" ghost icon-placement="right">
                  添加菜单
                  <template #icon>
                    <div class="flex items-center">
                      <n-icon size="14">
                        <DownOutlined/>
                      </n-icon>
                    </div>
                  </template>
                </n-button>
              </n-dropdown>
              <n-button type="info" ghost icon-placement="left" @click="packHandle">
                全部{{ expandedKeys.length ? '收起' : '展开' }}
                <template #icon>
                  <div class="flex items-center">
                    <n-icon size="14">
                      <AlignLeftOutlined/>
                    </n-icon>
                  </div>
                </template>
              </n-button>
            </n-space>
          </template>

          <div class="w-full menu">
            <n-input type="input" v-model:value="pattern" placeholder="输入菜单名称搜索">
              <template #suffix>
                <n-icon size="18" class="cursor-pointer">
                  <SearchOutlined/>
                </n-icon>
              </template>
            </n-input>
            <div class="py-3 menu-list">
              <template v-if="loading">
                <div class="flex items-center justify-center py-4">
                  <n-spin size="medium"/>
                </div>
              </template>
              <template v-else>
                <n-tree
                    block-line
                    cascade
                    checkable
                    :virtual-scroll="true"
                    :pattern="pattern"
                    :data="treeData"
                    :expandedKeys="expandedKeys"
                    style="max-height: 650px;overflow: hidden"
                    @update:selected-keys="selectedTree"
                />
              </template>
            </div>
          </div>

        </n-card>
      </n-gi>
      <n-gi span="2">
        <n-card :segmented="{ content: 'hard' }" :bordered="false" size="small">
          <template #header>
            <n-space>
              <n-icon size="18">
                <FormOutlined />
              </n-icon>
              <span>编辑菜单{{ treeItemTitle ? `：${treeItemTitle}`:''}}</span>
            </n-space>
          </template>
          <n-alert type="info" closable>
            从菜单列表选择一项后，进行编辑
          </n-alert>
          <n-form
              :model="formParams"
              :rules="rules"
              ref="formRef"
              label-placement="left"
              :label-width="100"
              v-if="isEditMenu"
              class="py-4"
          >
            <n-form-item label="类型" path="type">
              <span>{{ formParams.type === 1 ? '侧边栏菜单' : '' }}</span>
            </n-form-item>
            <n-form-item label="标题" path="label">
              <n-input placeholder="请输入标题" v-model:value="formParams.label"/>
            </n-form-item>
            <n-form-item label="副标题" path="subtitle">
              <n-input placeholder="请输入副标题" v-model:value="formParams.subtitle"/>
            </n-form-item>
            <n-form-item label="路径" path="path">
              <n-input placeholder="请输入路径" v-model:value="formParams.path"/>
            </n-form-item>
            <n-form-item label="打开方式" path="openType">
              <n-radio-group v-model:value="formParams.openType" name="openType">
                <n-space>
                  <n-radio :value="1">当前窗口</n-radio>
                  <n-radio :value="2">新窗口</n-radio>
                </n-space>
              </n-radio-group>
            </n-form-item>
            <n-form-item label="菜单权限" path="auth">
              <n-input placeholder="请输入权限，多个权限用，分割" v-model:value="formParams.auth"/>
            </n-form-item>
            <n-form-item path="auth" style="margin-left: 100px">
              <n-space>
                <n-button type="primary" :loading="subLoading" @click="formSubmit">保存修改</n-button>
                <n-button @click="handleReset">重置</n-button>
              </n-space>
            </n-form-item>
          </n-form>
        </n-card>
      </n-gi>
    </n-grid>

    <CreateDrawer ref="createDrawerRef" :title="drawerTitle"></CreateDrawer>
  </div>
</template>

<script lang="ts">
import { defineComponent, ref, unref, reactive, toRefs, onMounted, computed } from 'vue'
import { useMessage } from 'naive-ui'
import { DownOutlined, AlignLeftOutlined, SearchOutlined, FormOutlined } from '@vicons/antd'
import { getMenuList } from '@/api/system/menu'
import { getTreeItem } from '@/utils/index'
import CreateDrawer from './CreateDrawer.vue'

const rules = {
  label: {
    required: true,
    message: '请输入标题',
    trigger: 'blur'
  },
  path: {
    required: true,
    message: '请输入路径',
    trigger: 'blur'
  }
}

export default defineComponent({
  components: { DownOutlined, AlignLeftOutlined, SearchOutlined, FormOutlined, CreateDrawer },
  setup() {
    const formRef: any = ref(null)
    const createDrawerRef = ref()
    const message = useMessage()

    const isAddSon = computed(() => {
      return state.treeItemKey.length ? false : true
    })

    const state = reactive({
      addMenuOptions: [
        {
          label: '添加顶级菜单',
          key: 'home',
          disabled: false
        },
        {
          label: '添加子菜单',
          key: 'son',
          disabled: isAddSon
        },
      ],
      loading: true,
      subLoading: false,
      isEditMenu: false,
      treeData: [],
      treeItemKey: [],
      treeItemTitle: '',
      expandedKeys: [],
      formParams: {},
      pattern: '',
      drawerTitle: ''
    })


    function selectAddMenu(key) {
      state.drawerTitle = key === 'home' ? '添加顶栏菜单' : `添加子菜单：${ state.treeItemTitle }`
      openCreateDrawer()
    }

    function openCreateDrawer() {
      const { openDrawer } = createDrawerRef.value
      openDrawer()
    }

    function selectedTree(keys) {
      if (keys.length) {
        const treeItem = getTreeItem(unref(state.treeData), keys[0])
        state.treeItemKey = keys
        state.treeItemTitle = treeItem.label
        state.formParams = Object.assign(state.formParams, treeItem)
        state.isEditMenu = true
      } else {
        state.isEditMenu = false
        state.treeItemKey = []
        state.treeItemTitle = ''
      }
    }

    function handleReset() {
      const treeItem = getTreeItem(unref(state.treeData), state.treeItemKey[0])
      state.formParams = Object.assign(state.formParams, treeItem)
    }

    function formSubmit() {
      formRef.value.validate((errors) => {
        if (!errors) {
          message.error('抱歉，您没有该权限')
        } else {
          message.error('请填写完整信息')
        }
      })
    }

    function packHandle() {
      if (state.expandedKeys.length) {
        state.expandedKeys = []
      } else {
        state.expandedKeys = state.treeData.map(item => item.key)
      }
    }

    function onExpandedKeys(keys) {
      // let key = keys[0]
      // console.log(state.expandedKeys)
      // if(state.expandedKeys.includes(key)){
      //   state.expandedKeys.splice(state.expandedKeys.findIndex(item => item === key), 1)
      //   console.log(state.expandedKeys)
      // }else{
      //   state.expandedKeys.push(key)
      // }
    }

    onMounted(async () => {
      const treeMenuList = await getMenuList()
      state.expandedKeys = treeMenuList.list.map(item => item.key)
      state.treeData = treeMenuList.list
      state.loading = false
    })

    return {
      ...toRefs(state),
      createDrawerRef,
      formRef,
      rules,
      selectedTree,
      handleReset,
      formSubmit,
      packHandle,
      onExpandedKeys,
      selectAddMenu
    }
  }
})
</script>
